Overview
The PCM5121PWR, produced by Texas Instruments, is a high-performance stereo digital-to-analog converter (DAC) integrated circuit. It is part of the PCM512x family, which features advanced segment-DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. This device is designed to provide high-quality audio output and integrates various audio processing functions, making it suitable for a wide range of audio applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 28-Pin TSSOP (PW) |
| Operating Temperature Range | -25°C to 85°C |
| Supply Voltage | 1.65V to 3.46V |
| Analog Supply Voltage | 3.3V |
| Digital Supply Voltage | 1.8V or 3.3V |
| Dynamic Range | 106 dB |
| Signal-to-Noise Ratio (SNR) | 106 dB |
| Total Harmonic Distortion + Noise (THD+N) | -92 dB at -1 dBFS |
| Output Voltage | 2.1 VRMS (ground-centered) |
| Audio Data Formats | I2S, Left-Justified, Right-Justified, TDM/DSP |
| Audio Data Bits | 16, 20, 24, 32 bits |
| Sample Rate | Up to 384 kHz |
| Control Interface | SPI or I2C |
Key Features
- Register-selectable audio-processing functions up to 48 kHz, including dynamic range control (DRC), equalization (EQ), and filtering.
- DAC functionality up to 384 kHz.
- Market-leading low out-of-band noise.
- Selectable digital-filter latency and performance.
- No DC-blocking capacitors required.
- Integrated negative charge pump.
- Intelligent muting system with soft up or down ramp and analog mute for 120-dB mute SNR.
- Integrated high-performance audio PLL with BCK reference to generate SCK internally.
- Accepts 16-, 20-, 24-, and 32-bit audio data.
- Supports I2S, Left-Justified, Right-Justified, and TDM/DSP audio data formats.
- SPI or I2C control interface.
- Software or hardware configuration.
- Automatic power-save mode when LRCK and BCK are deactivated.
- 1.8-V or 3.3-V failsafe LVCMOS digital inputs.
- Single supply operation with integrated power-on reset.
Applications
The PCM5121PWR is suitable for various audio applications, including:
- LCD TVs
- DVD players and recorders
- AV receivers
- Home theaters
- Professional audio equipment
- Automotive audio systems
Q & A
- What is the package type of the PCM5121PWR?
The PCM5121PWR comes in a 28-pin TSSOP (PW) package.
- What is the operating temperature range of the PCM5121PWR?
The operating temperature range is -25°C to 85°C.
- What are the supported audio data formats?
The device supports I2S, Left-Justified, Right-Justified, and TDM/DSP audio data formats.
- What is the maximum sample rate supported by the PCM5121PWR?
The maximum sample rate supported is up to 384 kHz.
- Does the PCM5121PWR require DC-blocking capacitors?
No, the PCM5121PWR does not require DC-blocking capacitors due to its ground-centered output design.
- What control interfaces are available for the PCM5121PWR?
The device can be controlled via SPI or I2C interfaces.
- What is the dynamic range of the PCM5121PWR?
The dynamic range is 106 dB.
- What is the signal-to-noise ratio (SNR) of the PCM5121PWR?
The SNR is 106 dB.
- Does the PCM5121PWR have an integrated power-on reset?
- What is the typical power dissipation of the PCM5121PWR?
The maximum power dissipation is 155 mW.
